Thermostatic trap or valve.



'UNITED s'rii'rns JAMES H. MARTIN, Jegorjoiiroiieo, ILLiNois, 'AssIGNoit "ro oHAItLns P. i/ioNAfH,

'rATENT .oFFioia-l i OF CHICAGO, ILLINOIE.

THERMOSTATIC TRA? OR ETALVE- izoeaee.

specification of Letters Ptent. Patentea Apr; :38;1914.

Aphli'eation filed January 2, 1914. Seril No 809.984. w

' ize anie at' Chicago,` iii the count)Y of Cook and State )f'lllinois,.have inve'nted certain new and or Valves, of which the following is a'specification.

chaiiibered diaphi'ag'n'r oreapsule contain-v bered diaphragm; or. Capsule and adapted to Jr., a citizen of the United States. residing be opened by thel ini'uslfiiiig,` or'jinflowing 'Water and closed by the chambered diaphragin 'oi' Capsule to -control the port beuseful Improvements iii Thei'mostatic Trans tween the [Water inlet passage and water diseharging;I Chamber; 'to prevent 4ill efiects .of over-exp'ansion 'of the'ehambered dia 'Thev invent-ion relates to that t- Vpe .ofi the-rmostatic traps or valves iii which a phragin or VCapsule by a yieldable bumpei' in ei'igagemeiit with the c'hambei'ed diaphragin ing a volatile. liquid or medium furnishes .the active membei' of the trap or valve. said membeihaving the property of expanding and 'contracting undei' the effects of heat and coldfionz thel'volatile liquid oi' inediuin,- f

C 1 heat e sing the liquid or medium to vaporexpand the diapliragni o r ,Capsule and cold causing a i'e'tui'n of the vaporized liquidor medium to its normal' state and 1 into the structure of the valve as a whole.

elf;

. to overcoine expansible liquid;V or

Shell or .casing `by pi'ovding' 'an vthermostatic ti'aps oi' .xalves employing a .25s

found in actual 'practice that. i

membei'f-and a yieldable bumper member; to pi'event sedimentand dirt 'from enter'ng the Water dischargiiig' Chamber and' adhering to tlie ,chai'nbei'eddiaphragni or Capsule; to enable. 'the trap' or valve to be' readi'lv bloi'vn out 'or eleaned; and to improve generally the' construction, arrangement and operation' of 'the parts. lor elements entering r1`he iiivention consists in the several 'parts' and combination of parts hereinafter (lescribedand pointed out in'the ciaiins asnexv.

chambered diaphragm 'or capsule and-an epansible liquid oi' medium. as heretofore z z for discharging the water of .condensat-ion;

constructed are objectionaible iii several respeets, among' the niost-pronounced 'of which .may bered diaphi'agnior Capsule` becoining ruptui'ed, broken oi' disabled iii some way, the

be nientioned the liability of the chamconstant requirement of -readjustinent of the partsfthe difliculty' in. i'enioving the' ti'ap oi' valve for readjustment or i'epairs,

the imperfeet construction' and ari'angei'nent of the= chan'ibered diaphi'agm or Capsule and; the

''ehiefz-ietuated thei'eby, and

inspected and overhauled.

The` objects of. the.p`i'esent .ini'ention are the serious objections found in thermostatie t-ra-ps having' a chainbei'ed dia th'e c onstruetion andl .i ari'angeinent of .the

Sage for the `water 'andga Water discharg the uureliability i of the tran oi' val-Yefor use unless coustantl'y Serting and Withdrau'ing the Chamber-ed dia- At the ,bottom of the 95 In the drawings: Figiire 1.-is 'a sectional elevation showingv 'the trap or valve open Fig'. 2. a top or` plan view With the cover i'emoved; and Fig. an end elev'ation.

The trap' or valve of .the pi'esentiinvention. has a Shell or` casing With an outei' Yerticalwall 1), an intermediate Vertical Wall (2). a pei'ipheral ivall (3), and anvouterwall (4), which Walls constitutejthefmain bodyof the shell or casing. At the upper end.

phragm or CapsuleI shell or casing isa neck (7) surrounding the 4gdiseliaige' or outlet` passage (8).,'and asj hra or ca sule 'containinvavo-latile or P gm 1 o 'a i i n'iedium;' to improve i inlet pasf w ng Chamber injcommunicat-ion one with the usual nianner.

chargm other; and van inl'et passage'foi' the W'aterd-isi llia'mber; to locate the chainbei'ed diaphragnr vor Capsule iii the iva'ter diseliai'ging'cli'amber so' that' it caiibe readily fnd'quickly inserted and *remOVe WhOU- disco'nnecting the 'trap or valve; to furnish 'wall (Li) has jectedneckradiator or` llicatin'e; unit in the shown the neck YIias aninterioi' serew a return or discharge pipe aslusual.l z The 'a laterally extending 'or pro- (9) for attachi-ng the trap or va ve to a,

A -chanil'ier' (10)"is forined between 4'the i walls (1), and

opeiiltofthe outlet or discharge passage (8) (3) and a't its bottom is and, this -ehan'ibei' (10)' constitutes; a"water diacliai'gaiig v Chamber. n `mlet -passg'e (1))and this inlet passage (11) extends into and through the neck (8), and constitutes an inletpassage for supplying or conveying the water of condensation to the water discharging Chamber (10) l'to be discharged therefrom. The curved lower part or section of the inlet passage (11) also serves as a sedinient chamberintoiwhich the sediment ancl dirt carried by the infiowing Water of condensation will be deposited and retained against entering into the 'water receiving and dischargin chamber, thu maintaining the water disc arging chamber'free from Isediment and dirt. As shown a dependiig balle plate or deflector (12) in the inlet passage serves to deflect the inflowing water downward, thus insuring the deposit of the sediment and dirt at the bottom of the curved or lower section of the inlet passage.

The wall (2) has therein a threaded hole' 13) into which is entered a threaded bushing-(11), the openingof which forms a port (15'), furnishing communication between the Chamber (10) and the inlet passage (11) for i water of condensation to flow into thecharnher (10) through the port.. As shown the port (15) is located above the lower edge. of the battle plate or defiector (12) thns ,guarding the port (15) against the ldirect flow of sedinient and dirtinto and through the port to enter the chambr (10) with the g The inner end of the bushing (14) has a seating face (16) around the end of the port (15), which seat- 'ing face (16), as shown,v is beveled, but' i could-.be otherwise formed; and the seating face' (16) has co'acting therewith a seating face' (17 on a slidable valve (18), which seating face (17) as'shown is rounded or smi-spherical in Shape, but could be otherwise formed; so long as the 'twol seating 'faces co-actto close the port (15), when the slidable Valve (18) advanced, and to open r such port when the slidable valve is receded The slidable valve (18) is arranged horizontally and is loosely mounted in av hole or guideway (19) therefor in a cross-bar or support (20) extenjdingacross the .chamber (10) and formed integral With or otherwise attached to the peripheral or annular wall of the Shell or casing,-but thevalve (18) could be otherwise mounted so as to have a horizontal positionl and be free to (slide .forward and backward for close and open the port (15) as required in the operation of the trap or valve. The vvalve 18) is advanced or moved forward by the action of the chainbered diaphragm or eapsule, and isreceded or lmovedbackward by the pressure of the water against its seating end. The baseor rear end of the valve (18), in the construction shown, has a cross.

slot or nick (21) for engagement with a sereW-'driveror other instrument by means is formedflbetween the walls (2) and of'vhich.

I has aaf'fiole 'of a slid'able bumper (28), which bumpcr Loaigeee the valve (18)'can'be rotated to properly ,grind the seating faces 16) and (17) and make a close fit between 'such faces.

boss (22) is formed on the wall 1) and has a threaded 1;role (23) which recci-'ve's the threaded body (24) of a plug having a head (25.) suita-bly formed to be engaged by a wrench or other tool for entering the bodyv of the pluginto the threaded hole (23) 'therefor. ,The body (24) of the plug has a` ehainber (26) and the head (25) of the plug (27) into which enters the end has a threaded section for a nut entered into the Chamber ('omin out by an inturned lip (30) on the end o the plug body (24) in the construction shown, but the nut (29) could be other- Wise held in place. A coil'spring (31) is located aroundvthe plug body (24:) and be-` tween the nut and the end shoulder of the Chamber (26),`which spring serves to hold the bumper with'l its acting or engaging end projected and-at the same-,time permits the bumper asa whole to yield or, slide inwardly. in case an ,excessive pressure is exerted against the projected acting or cngaging end of the bu1nper,.-which excessive pressure would occur in the event of any over cxpansion of the chambered diaphragm or capsule, or from an excess of backward or receding niovement of the controlling valve (18) caused by a lSudden inrush or extra force of the incoining water of condensation.. As shown, the outer or projected end of the bumper (28) has across-slot 'ornick (32) for the reception of a screwdriver, or other tool, 01' device, by means of which the bumper .can be properly adjusted in relation -to the chambered diaphragni or. capsule. f

' 'The chambered diaphragmor .Capsule (33), is located between the horizontally slidable valve- (18) and the horizontally (28) and stands vertically J yieldable bumper or upright.. The chambered diaphragm or Capsule (33.), as shown, is formed of a dish shaped section havinga corrugated side wall vor plate (34) and a peripheral wall or plate (35), and a corrugated cover or side wall or plate lattached to the periphera'l wall (35) by a brazed overlapped or seamed joint (37), or in aliy other suitable manner' `so as to furnish a liquid and vapor tight or Capsule. The chambered'diaphragm or Capsule (33) is made of 'thin' Sheetmetal stai'nped or otherwise fori'ned into, Shape, and as shown the' side walls' or plates (34) and (36) have at the center a flat disk (38) whic'h is depressed in relation to the enter lrim or peripheral wall (35) so as to give each side wall an'inward flare toward the center, by whi'h the expansion will be ex-' (26) of the body (2d) of vthe plug and held againstend removal or the escape of the liquid and lvapor from the Chamber of the diaphragm erted from the center outwar dly":vitli but littl'e, 'if any, strain on the peripheralqoint,

'thus preventing to a great extent, the break- ,resist the force4 or pressure againsttbreak-.p ing, bending or rupturing the side walls or plates in expanding ,to seat the slidable valve, The Chamber (40) of the diaphra'gm orcapsule'contains a'volatile liquid or mev.dinm (41), such for4 instance as a niixture of alcohol and water' in proper proportions for heat to createthe vapor required to expand the walls or-'plates of the 'dia'phragm or Capsule 'the 'necessary distance to seat the slidable valve (18)` and close the port ('15) against the admission of steam; The chambered daphragm or Capsule (33) rest's at its 'lower edge on a'ledge or shoulder (42), and

- is gnided and held inplace at its lower ,edge

by a lug (43) and. is supported and held edgewisebetween the 'slidable valve (18)' and yieldable bumper (2-8) by lugs (44.) von the per-iphei'al wall '(3) of the shell or 'casing, 'The diameter of .the chambered diaphragi'n or' Capsule and the relation thereto of the bottom ledge or shoulder (42) and the side lugs (44) is such as to bring the Centers .(38) 'and bui'er plates' iii axial alinement "horizontally with the slidabl'e valve (18) and yieldable bumper (28), and the slidable valve (18) is located iii horizolntalalinemeut withthe port (15) that the horizontal expansion of' the wallslor plates (34) and (36) from the'center outward will be in direct line with the horizontal movement of the slidable valve, thus insuring the closing 'of the valve in`di'rect line with the' movement of the center of the Chainbered di'aphragmor Capsule. s

The open upper end of theshell or .Casing is olosedby, a 'Cap or cover (45) having a threaded depending fiange (4G) to enterthe' annula fall orfiange 6) and alateral 'lange (47) to engage 'theuppier face of the wall or flange (6) when the cover is in place,

' and tightly close the' o'pen'in" in the upper endiof'the sh-ell or casing. The opening in -'tl1e upper end of the shell 01' casing-is of suflici'ent diameter. to allow the diaphragin the Cap or. cover' closing the trapf'orv'alve-re'ady for use.

or Capsule (33) to be vdropped into position betweenthe lslidable 'valve (18) and the vieldable bumper (28), and when fthe diaphragin` or Capsule is inserted' 'in position, (45-) 'is threaded int-o place' The threaded hole (23) of the boss (22) is of sufiicient diameterfor insertioninits holel or mounti'ng- (19) i I 5 and the 'yiel'dable' 'bnmper '(28) with the coil theron is entered into the Chamber (26) of the hollow plug and secured in place by the per (28) is properly ,a'space between its acting end' and the end of the slidablel valvev (18) when thevalve is in its open position,'for the insertion of the Chambered diaphragin or- Capsule-between the ends of the valve and bumper and .disengaged from' both the valve and bumper,jbut in contact or nearly so with the ends of both the valve and bumper, so that as the chambered diapliragm or Capsule expands it Will force the slidable valve' ('18) horizontally and 'close the port' (15) and with'the Contraction of the expansible Chambered diaphragm or'ca'psule to normal condition, allow the force or pressure' of the water against the end of. the slidable. valve to open` the port (15) for Water of cond'ensation to discharge' w lA boss (48) is formed atthe lower end or bottoin of the shell or casing, and has a. thi'eaded hole. (49) which receives a threaded stem (50) having a head ;(51), suitably formed for the application of a v. steni (50) can be advanced and receded in its t-hreaded hole. The 'stem (50) extends across the discharge Outlet (8) and, as

- or valve when firstattached', or before using after theheating system lhas been shut down,

it is only necessary. to open the hole or port (54) by receding or wi'thdrawing the stein '(50) .and this blowing out] and Cleaning 'eifeot extends to the heating unit or radiator to which the ti'ap o'r valve is' attached and in this way the entire 'heat-ing .system can' be blown out and clea-ned. After the blow-- ino' out and Cleaning-'has been completed` the stein (50) can bel advanced to close the hole or port (54-), when the trap "or-valve and the` hea-ting' system is again 'ready forl use -It- 'is to be'no-tecl that this blowing out yand` Cleaning of .the tra-p orI valve and the heatingsystem can be 'accomplished withoutrew i moving' thetrap or valve, which is a det-pass theval'vje. (18)' sil-'able feature in the operating of-.he't-ing'- systems.

' The trap 'or -valv can be attached'to fa spring, '(31) therearound and the nut (29) i radiator or heat-ing unit bya 'coupling as 4inturned lip .(30) or otherwise, and thebum- .adjusted so as to leaver wrench or other tool by means of which the y shown, 'has a reduced section or portion (52) in line with the out-let passage and 'terini-f to be blown out: and cleaned; to do which shown, which coupling consists of a-,tailpiece (55) having apassage (5G), an aruiu,v lar-fiangeror lip (57),'a seating face f to coactr with a seating face` (59) on the -n'eclr` (9), -and flugso'r recesses (60)' to. be

engaged by a sermY-driyeror. other deyicetojfl insert'ithe tail-piece ;in the :radiator onlie'ating unit, and the connectionis completed ,tail piece ,(5`5)-and enter the inlet passage (11) and rising therein will pass into the I discharging chamber (10), the valve meu,-

Water.

lber-f( 158) beingreceded as shown in Fig. 1 to openthe port for the inflow of the The water of condensation entering theldise'narging Chamber will pass therefronrthrough the discharge passage' or outof the let and enter-'the return or discharge pipe- (uot shown) forfinhl' 'dischargeat the place or point desired. Theinfiow of water will continuei'until he radiator or heating unitisrelieredl of vthe Water of Condensation, and

.will *be followed'by steam passing through the `inlet?pas'sage '1(11) and port' (15) and :f entering the'V discharging Chamber, where itcomes inl'contactzwith the thermostatic memthe inflow of steam through 'the port... The thermost'atic member-'will cool iafter the 1 steam is shut-,Mid fromthe discharging Chamber and such Cooling will return the 'vaporized liquid or' medium to its normal conditionl allowing' the walls or plates of the. thermostatic member to contract and releasing the pij'essure or force against the slidableyalve.member for the pressnreor force'of the infimving" water of (rondensation to open theslidable valve member and permit the water to enter the disrharging chan'ber to be discharged ,therefronn such discharge continning until steam again passes l into the discharging Chamber to act' and i expand a thel 'walls or plates thermostatic member and close the port 15) against furthez' inflow of steam. This alternate opening and ,closingof the port (15) will Continue as nooaeee reliering the' radiator Vor heating nnitvof the water ofcondensation, and the oper- :i tion iigill he. automatic depending' solely o n the'v presencegor absence ofi steamin the dis- Charg'ngflchamber and the, inflow ofA water into such Vichamber, the inflowing wateropen-A mg ,the `port l(1,5) and-,the ,steamx entering the discharging Chamber fclosing such port.

The trap or valr'e ofthe present invention has many advantages among which may be named; the easy and ready assembling of the, partsL it oniyY eing necessary to enter the slidable valve member into position through the hole (23), then enter the chambered plug (24) ('25) with the burnper (28) in placev and properly adjusted into the threaded l1o le (23), then drop the thermo-static niembei' (33) into position between the ends of'V the-slidable valve member and the yieldable bumper, then applying the cap or closure (4:5), and finally attaching the coupling, compl'eting the assembling of the parts 4or elements of the trap or valve ready for use; the replacing of a ruptured, broken vor impaired thermostatic member to do which it is only necessary-to remove the cap oriclosure, take out the thermostatic member, in-

sert a new thermostatic member in place thereof, and apply the cap or closure; the keeping vof the -seating faces ground and in perfect condition for closing the port; the adjnstment of the yieldable bumper to prop-` erly space the distance between its end and the end of the slidable Valve member; the preventing. of injury and ill-efects. from over expansion of the thermostatic member lor from over-pressure 'from the i-nflowing water, by means of the yieldable bumper; and the lessening of the care and attention required to maintain the trap or valve in operation. A11 of these advantages are found in the trap or valve of the present invention which embodies simplicity of construction, ease 'of adjustment, and perfection f operation.

Wl at I claim as new is:

.1. lin a thermostatic trap, the Combination w of a casing having an inlet passage for water and having also a water discharging cham! her and an outlet passage leading therefroin and a port furnishing Communication between the inlet and Chamber, 'a loosely monnted and frcely slidable valve member rontrolling the port, a disconnected thermostatic member loosely supported in the water discharging Chamber for actuating the valve, and 'a yieldable bumper e'xternally enfaging the thermostat-ic member and operating to prevent Ill-effects from over-expaiision of the ther-mostatic member, sub-` stantiallyas 'described a i 2. In a thermostatic trap, the Combination ofa casing-having'an inlet pa-ssage pro- Vided with a. sediment retaining section, and

longasfifthe ltrap orl valve is in operation, i having also a. water discharging chamber sediment section therein,

rpg-1,888

and an Outlet passage leading therefrom, and a port furnishing connnunication botween the inlet passa'e and the discharging chamber. a loosely mouuteld and freely .slidable valve membe1` controlling'the port,v a disconnected thermostatic member loosely supported in the water 'diseharging chamb'er foractuating the valve 'm onedh'ection. and a vieldable bnmper externall engaging the thermostatic member and Operating to prevent ill-efl'ects from over expansion of the' thermostatlc member, substantially as, de-

3. In a thermoistatic trap, the combination of a casing having an inlet passage for water of condensation and having. also a .water discharging Chamber and an Outlet pas'sage leading therefrom and a port 'furnishing communication between `the inlet passage and the water discharging Chamber, a loosely mounted and vfreely slidable horizontal valve member controlling the port, a disconnectfed ver'tical thermostatic member loosely supported in the water discharging chamberfor actuating the. valve in one direction, 'the infiowing water actuating the valve in the opposite direction, and a yieldable horizontal bumper externally engaging .the'thermost-atic member and Operating to prevent ill'efi'ects from over-expansion of the' thermostatic member, said thermostatic member loosely located between and Vu'nattaehed to the valve member and bumper,`

substantially as desoribed.

4. In a thermosta-tic t-rap, the combmation vof a casing having an inlet passage provided 'with a= sediment retainngsection and havmg also a water dischargmg chamber and an outletpassage leading therefrom and .a port furmshing communication between 'the i'nlet passage` and the water discharging 5; In athermostatic trap, the combination inlet passa-ge with a a. water discharging chamber,` a port between the' inletpas- Sage and water discharging Chamber and an outlet, for the water disoharging Chamber, a loosel mounted and freely slidable honzontal valve member m the water dischargof casing having an.

in'g chambe'r, -adisconnected verticallydis-v posed thermostatic member loo'sely supportedl in the water discharging Chamber, a yield'able bumper for preventing ill-eflects of over expansion of the thermostatic member, the 'alve member and bumper unatthreaded Stein Afor blowing off the sediment section of the .inlet passagm snbstantially as' described; o

In a thermostahc trap;'tlierkcombination of a easmg having an mlet passage pro- .tachedto the thermostatic member and aH vided with a sediment retaining section, and

having 'also a water discharging' Chamber and an outlet therefrom and a port lfurnishing communication between the inlet passage and the water discharging Chamber., a deflecting plate in the inletpassage, a lo'osely mounted and freely slid'able horizontal valve member controlling the ort, a diseonnected vertically disposed andp loosely supported thermostatic member for moving the slidable. valvefmember to close the port; the infiow- ;ing water movingI the valve member to open the port` and a Lvieldable horizonta-l bumper externallyv engagmg the thermosta-tic member and operatmg to prevent ill-eit'ects'from 'over expansion of and over pressure on the thermostatic member, the valve member and bumper unat-tached to. the thermostatic member, substantially as described.

'7. In'a .thermostatic trap, the combination 'of a. casingA having an inlet' passagq-a water discharging hamber, al h port between the inlet paesage and the water discharging Chamber, and an Outlet 'passage for the water discharging chamber, a loc-sell mounted and freely slidable horizontal valife member in the water discharging` chamberi afivertically iposed d'sconnected thermostat-ic member loosely sup rted in the water discharging Chamber, anc a ieldable bumper horizon' tally entered z to the casing ,and between the end of wli'ici and the end `f' the slidable valve member thenthermostatic member is loosely inserted,"substantially as` described' 8. 'In athermostatic trap,`the combination of a casing having an inlet 'passag`e, a water disoharging Chamber, a port between the inlet passage and the water di'scharging ,chamben and an Outlet pass'ag'e for the water Chamber, said casing open atv discharging its upper end, a. looselymounted 'and freely slidablefhorizontal valve member in. the Water discharging Chamber, a vertically disposed disconnected thermosta-tic member loosely 'supported in the water dischargmg thamber, a yieldable bumper horizontally entered into the casing and between the end of which and the endlof the slidablevalve.

the thermostatie member' is' loosely closingfthe open up- 'substantially as demember I inserted, and. a' cap for per vend" of ,the casing,v scribed.

9. In'a thermostatic trap, the combina! tion of a Casing having an inlet passage, a Water discharging Chamber, a port between the inlet passage andv the Water discharging Chamber, and an outletfor the water dis- Charging Chamber, said Casing having an open upper end, a freely siidable horizontal valve. member in' the water diseharging Chamber, av verticaily disposed disconnected thermostatic member ioosely supported in the Water discharging Chamber and consisting' of a Chambered diaphragm containing a Volatile liquid, a yieldeble bumper horizoiitallyentered into the casingend between the end of ,which end the end of the slidabie. valve member the therniostatie member is loosely' inserted,-and a Cap for Closing the open upper end o t the Casino, snbstantially as described.

10. In a thermoetatie trap, the Combination of :i Casing having an iniet passage, a Water discharging Chamber, a port between the inlet passage and the Water di'scharging Chamber end an outiet orthe wet-er discharging Chamber, said Casing haiin'g' an 'open upper end,` a treely' slidable horizontal valve member in the Water dischargmg Chamber a vVerticall dis iosed'diseonnected thermostatic member looseiy supported. in

the Water discharging Chamber and consisting of a chambered diaphragm containing a volatile liquid, a yieidabie bumper horizontaliy entered' into the Casing and Consisting of a lChambered plug, 'a s1idab1emember, a nut. and a spring., the end of the slid-v able member of the bumper and the end of the freely slidable valve member having the thermost'atic /member ioo'seiy inserted lietween them, and a. Cap for 'Closi'ng' the open upper end of 'the Casing, substantialiy :ts described.

11. In' a. thermostatiotrap, the Combination of a casng having an inlet passage, a

water discharging Chamber, a, port between the inlet pnssage and the water dis'charging none-,eee

Chamber, said Casinglharing.:nifiopeny upper end, a freely shdabl'ev hor1zontai Velvepmem ber` a Cross-bar inaithe waterv discharglng Chamber in "which the slidabl'e `valve member is ioosely mounted, a vertienlly disposed disconnected thermostatic. member loosely supported in lthe water disChargin-g vChamber and consisting of a'ehambered' diaphrugm Containing a Voiatile liquid,

bumper horizontaily entered 'into ;t he{casi ing and Consisting of4 a,.,Chambered'plug a slidable member, a nut, and a Spring, the end of the slidable membervvof the bumper and the end of the freely, 'slidable valve member having' the thermostatiemember loosely inserted betwnthem, anda =Cap for ciosing the open upper`` end rffthe.csing, substantially as described.`

12. 'In a thermostatic trup'g the combintition, 'of a. Casing having an iniet with a sedimentl retaining section, V:rnater discharging Chamber, a port fbet'we'en the inlet passa-ge an'd the water',discharging Chnmber and an. outlet'lforMtheifater discharging. Chamber, a freelyff` slidable borizontai valve member. iirthewater discharging Chamber, a vertically disposed: disconnected thermostatic memberu'loosely" supported in the Water Vdisolnn'gingv yCh'gunber and Conisting of a Chambeeddiaphragm Containing a' 'volatile wliquidpaf iyieldable bumper horizontally entered' into the Casing, and between the end` of which'iand the passage end of the freely slidabfle 'Vah'e member the thermostatic member is: lloos'eiy inserted, a Cap for Closing` 'theopen upperen'd ofthe Casing, and means for blowingofi'ithe sediment section of'the inlet'passage, s'ubetnntially as described. f .4: i' i,

'JAMES H. VhfiR-'IlI'x JRM.

Witnesses v OSCAR WT. Bom), p w Louis M. Bnewix 

